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How to Obtain Interface Status
This procedure explains how to determine which interfaces are currently available on a system and their status. This procedure also shows which interfaces are currently plumbed.
On the system with the interfaces to be configured, assume the Primary Administrator role or become superuser.
The Primary Administrator role includes the Primary Administrator profile. To create the role and assign the role to a user, see Chapter 2, "Working With the Solaris Management Console (Tasks)," in System Administration Guide: Basic Administration.
Determine which interfaces are currently installed on your system.
# dladm show-link
This step uses the dladm command, which is explained in detail in the dladm(1M) man page. This command reports on all the interface drivers that it finds, regardless of whether the interfaces are currently configured.
Determine which interfaces on the system are currently plumbed.
# ifconfig -a
The ifconfig command has many additional functions, including plumbing an interface. For more information, refer to the ifconfig(1M) man page.
Example 6-1 Obtaining the Status of an Interface with the dladm command
The next example shows the status display of the dladm command.
# dladm show-link ce0 type: legacy mtu: 1500 device: ce0 ce1 type: legacy mtu: 1500 device: ce1 bge0 type: non-vlan mtu: 1500 device: bge0 bge1 type: non-vlan mtu: 1500 device: bge1 bge2 type: non-vlan mtu: 1500 device: bge2 |
The output of dladm show-link indicates that four interface drivers are available for the local host. Both the ce and the bge interfaces can be configured for VLANs. However, only the GLDV3 interfaces with a type of non-VLAN can be used for link aggregations.
The next example shows the status display of the ifconfig -a command.
# ifconfig -a
lo0: flags=2001000849 <UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
ce0: flags=1000843 <UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
inet 192.168.84.253 netmask ffffff00 broadcast 192.168.84.255
ether 0:3:ba:7:84:5e
bge0: flags=1004843 <UP,BROADCAST,RUNNING,MULTICAST,DHCP,IPv4> mtu 1500 index 2
inet 10.8.57.39 netmask ffffff00 broadcast 10.8.57.255
ether 0:3:ba:29:fc:cc
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The output of the ifconfig -a command displays statistics for only two interfaces, ce0 and bge0. This output shows that only ce0 and bge0 have been plumbed and are ready for use by network traffic. These interfaces can be used in a VLAN. Because bge0 has been plumbed, you can no longer use this interface in an aggregation.
How to Configure a Physical Interface After System
Installation
Use the next procedure for configuring interfaces.
Before You Begin
Determine the IPv4 addresses that you want to use for the additional interfaces.
Ensure that the physical interface to be configured has been physically installed onto the system. For information about installing separately purchased NIC hardware, refer to the manufacturer's instructions that accompany the NIC.
If you have just installed the interface, perform a reconfiguration boot before proceeding with the next task.
On the system with the interfaces to be configured, assume the Primary Administrator role or become superuser.
The Primary Administrator role includes the Primary Administrator profile. To create the role and assign the role to a user, see Chapter 2, "Working With the Solaris Management Console (Tasks)," in System Administration Guide: Basic Administration.
Determine which interfaces are currently installed on the system.
# dladm show-link
Configure and plumb each interface.
# ifconfig interface plumb up
For example, for qfe0 you would type:
# ifconfig qfe0 plumb up
Note - Interfaces that are explicitly configured with the ifconfig command do not persist across a reboot.
Assign an IPv4 address and netmask to the interface.
# ifconfig interface IPv4-address netmask+netmask
For example, for qfe0 you would type:
# ifconfig qfe0 192.168.84.3 netmask + 255.255.255.0
Note - You can specify an IPv4 address in either traditional IPv4 notation or CIDR notation.
Verify that the newly configured interfaces are plumbed and configured, or "UP."
# ifconfig -a
Check the status line for each interface that is displayed. Ensure that the output contains an UP flag on the status line, for example:
qfe0: flags=1000843 <UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
(Optional) To make the interface configuration persist across reboots, perform the following steps:
Create an /etc/hostname.interface file for each interface to be configured.
For example, to add a qfe0 interface, you would create the following file:
# vi /etc/hostname.qfe0
Edit the /etc/hostname.interface file.
At a minimum, add the IPv4 address of the interface to the file. You can use traditional IPv4 notation or CIDR notation to specify the IP address of the interface. You can also add a netmask and other configuration information to the file.
Note - To add an IPv6 address to an interface, refer to Modifying an IPv6 Interface Configuration for Hosts and Servers
Add entries for the new interfaces into the /etc/inet/hosts file.
Perform a reconfiguration boot.
# reboot -- -r
Verify that the interface you created in the /etc/hostname.interface file has been configured.
# ifconfig -a
For examples, refer to Example 6-2.
Example 6-2 Adding Persistent Interface Configurations
The example shows how to configure the interfaces qfe0 and qfe1 to a host. These interfaces remain persistent across reboots.
# dladm show-link eri0 type: legacy mtu: 1500 device: eri0 qfe0 type: legacy mtu: 1500 device: qfe0 qfe1 type: legacy mtu: 1500 device: qfe1 qfe2 type: legacy mtu: 1500 device: qfe2 qfe3 type: legacy mtu: 1500 device: qfe3 bge0 type: non-vlan mtu: 1500 device: bge0 # vi /etc/hostname.qfe0 192.168.84.3 netmask + 255.255.255.0 # vi /etc/hostname.qfe1 192.168.84.72 netmask + 255.255.255.0 # vi /etc/inet/hosts # Internet host table # 127.0.0.1 localhost 10.0.0.14 myhost 192.168.84.3 interface-2 192.168.84.72 interface-3 |
At this point, you would reboot the system.
# reboot -- -r |
After the system boots, you would then verify the interface configuration.
ifconfig -a
# ifconfig -a
lo0: flags=1000849 <UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
eri0: flags=1000843 <UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 10.0.0.14 netmask ff000000 broadcast 10.255.255.255
ether 8:0:20:c1:8b:c3
qfe0: flags=1000843 <UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
inet 192.168.84.3 netmask ffffff00 broadcast 192.255.255.255
ether 8:0:20:c8:f4:1d
qfe1: flags=1000843 <UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 4
inet 192.168.84.72 netmask ffffff00 broadcast 10.255.255.255
ether 8:0:20:c8:f4:1e
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See Also
To configure an IPv6 address onto an interface, refer to How to Enable an IPv6 Interface for the Current Session.
To set up failover detection and failback for interfaces by using IP Network Multipathing (IPMP), refer to Chapter 31, Administering IPMP (Tasks).